Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 9 - Quadratic Functions and Equations - 9-4 Factoring to Solve Quadratic Equations - Standardized Test Prep - Page 559: 46

Answer

-.5

Work Step by Step

$2x^2-13x-7=0$ $-b+\sqrt {b^2-4ac}/2a$ $13+\sqrt{13^2-4*2*-7}/2*2$ $13+\sqrt{169+56}/4$ $13+sqrt{225}/4$ $13+15/4$ $28/4 = 7$ $13-15/4$ $-2/4 =- .5$
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